Sharpening holder for gravers and other tools.



No. 850,084. .PATENTED APR-.9, 1907-. W. E. & F.'W. GROGKER. SHARPENING HOLDER FOR GRAVBRSAND OTHER TOOLS.

ASPILIOATION FILED AUG. 9, 1906.

jz'uenionr,

mhrwey c., WASHINGTON. n. c,

UNITED STATES PATENT OFFICE.

WALTER E. CROCKER, OF PROVIDENCE, RHODE ISLAND, AND FRED W. OROOKER, OF NORTH BALTIMORE, OHIO; SAID WALTER E. OROCKER ASSIGNOR TO SAID FRED W. CROOKER.

SHARPENING HOLDER FOR GR AVERS AND OTHER TOOLS- Specification of Letters Patent.

Patented April 9, 1907.

T0 00 whmn it may concern.-

Be it known that we, WALTER E. CROoKER and FRED W. CROOKER, citizens of the United States, residing, respectively, at Providence, in the county of Providence and State of Rhode Island, and at North Baltimore, in the county of Wood and State of Ohio, have invented certain new and useful Improvements in Sharpening-Holders for Gravers and other Tools, of which the following is a specification.

This invention relates to tool-holders, and especially to the class for holding gravers and other similar tools during the process of sharpening.

The object of the invention is to provide a hand device for holding engravers and other tools while being sharpened of such novel and peculiar construction and arrangement of parts that it'will hold tools of all shapes or forms, and especially the knife-like tools, without injury to them and without separate adjustment of a tool in the holder according to theface or edge desired to be sharpened.

A further object of the invention is to provide in a holder for sharpening tool-points a tool holding sleeve adapted to be swung from horizontal position to vertical position and to be revolved perpendicular to its swinging aXis Without removing the sleeve or the tool therefrom.

A still further object of the invention is to provide in a holder of this character a toolholding sleeve capable of adjustment lengthwise, permissible of revolution, and adapted to be swung to various angles from horizontal to vertical position Without removing the tool.

The object still further of the invention is to provide a novel and peculiar key or keeper for a tool to receive the thrust of a set-screw in clamping the tool in its holding-tube.

As far as known to applicants tool-holding sleeves or sockets of this class are incapable of complete revolution without having a standard or post for vertical adjustment of the tool-holder before they can be revolved or necessitating separate adjustment of the tool in the socket before they can be revolved, and the usual method or means of clamping certain tools in such holders injures the tools, and certain shapes or forms of tools cannot be securely hel It is therefore the purpose of this invention to furnish an improved device of compact arrangement and simple adjustment of parts, to overcome these and other various objects and disadvantages, and to provide a holder capable of clamping and revolving a tool of any form or shape and capable of fixing a tool at any desired angle from horizontal to vertical without separate adjustment of the tool and without separate adjustment of the holder.

In the accompanying drawings, forming part of this application, Figure 1 is a top view showing in dotted lines lengthwise adjustment of the tool-sleeve. Fig. 2 is a side elevation showing various angular adjustments in dotted lines. Fig. 3 is a front view showing in dotted lines revoluble movement of the sleeve. Fig. 4 is a section on the line :20 90, Fig. 1, showing a knife-like tool clamped in the sleeve. Fig. 5 is a section on the line y 11 Fig. 1, with the keeper removed. Fig. 6 is a detail perspective View of the handbracket. Fig. 7 is a detail perspective view of the clamping-key. Fig. 8 is a perspective View of the clamping-collar. Fig. 9 is an end view of the sleeve, showing a tool clamped therein.

The same reference-numerals denote the same parts throughout the several views of the drawings.

The holder is shown in connection with a sharpening-stone 1, and a knife-like or V- shaped tool or graver 2. The point of this tool, as well as all others of its class, requires a j nicety in sharpening, hence great precision in the manipulation of the tool. This we accomplish by simply clamping a tool inthe holpler and adjusting the latter instead of the too The hand-bracket 3 is preferably semicircular-shaped, having a front projection 4, and a pair of legs 5, adjustable vertically in the ends of the bracket by means of setscrews 6. Upon the projection 4 is formed a split bearing 7, controlled by a clampingscrew 8, having a handle 9 projecting outwardly from one side of the screw-head, so as not to interfere with the swinging of the sleeve. The trunnion 10 of a clamping-collar 11 works in the bearing 7, and the said collar has a thumb-screw 12 for opening and closing the collar on the tool sleeve or socket 13, hereinafter to be particularly described. The trunnion 10 has a screw-threaded bore lengthwise thereof for a suitable screw 14, which, together with a washer 15, connects the collar-bearing and holds the trunnion therein subject to the operation of the clamping-screw 8.

The tool-sleeve or tube 13 has a thickened V-shaped portion 16, forming a tool-seat terminating at the front in flanges 17. Opposite the portion 16 on the outside of the sleeve is a screw-threaded lug 18, through which a set-screw 19-works against a keeper or key 20. This keeper is wedged shapedthat is, its top face is straight and its bottom face is inclined fromthe inner end of the keeper to its outer end, where there is a recess 2 1 and lateral arms 22. The recess fits the flanges 17, and the arms overlap the flanges and the front end of the sleeve, thereby preventing displacement of the keeper when loose and rendering it readily adjustable to a tool. The bottom or inclined face of the keeper has a V-shaped inclined groove 23 throughout its length, and a notch 24 central of the arms 22 and of the said groove. The tool fits the said notch and groove, and the screw 19 engages the top face of the keeper. Interposing this keeper between the tool and the screw 19 not only holds the tool s uarely in the tube, but affords a bearing for (often thin blades) any of the gravers or other similar forms of tools to be held for sharpening without injuring the tools.

It will be seen that a tool once clamped for.

sharpening need not be reclamped; that the tube or sleeve containing a tool may be revolved and swung to various desired angles,

- according to the peculiar shape of its cuttingpoint; that the screw-handle of the split bearing is operated at one side of the holder, so as not to interfere with the turn and swing of the sleeve or' with the tool or its handle; that the shape of the bracket is such as to form a convenient hand-grasp, and that the bracket-legs may be adjusted as desired and held in such adjusted position by their setscrews.

It will be understood that various detail changes in form and proportion of the parts and their connections in practical application of the holder may be made without departing from the spirit of the invention.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a hand-tool holder, a hand-bracket having a trunnion-bearing, a collar having a trunnion working in said bearing to revolve the collar, and a tool-carrying sleeve slidable through the collar and revoluble therein perpendicular to the aXis of revolution of the collar.

2. In a hand-tool holder, a hand-bracket having a trunnion-bearing, a split collar hav ing atrunnion on the side and working in said bearing to revolve the collar, means for clamping the trunnion in said bearing, a toolcarrying sleeve slidable through the collar and revoluble therein perpendicular to the axis of revolution of the collar, and means for clamping the sleeve in the collar.

3. In a tool-holder, the combination, with the hand-bracket for sliding the holder, and a sleeve adapted to hold a tool for sharpening its point at various angles, of a collar in which the sleeve is revolved and slid, and means connecting the collar with the hand-bracket to permit the sleeve to swing perpendicular to its revolution.

4. In a hand-tool holder, the combination, with a hand-bracketfor sliding the holder, of a collar adapted to be revolved on the front of the bracket, a tool-holding sleeve revoluble in the collar and slidable across the axis of revolution of thecollar, and means to fix .the collar and the sleeve against said movements.

5. In a tool-holder the combination, with ICO the tool-sleeve having a'suitable set-screw, of

a tool-keeper having arms engaging one end of the sleeve to anchor the keeper.

6. In a tool-holder the combination, with the tool-sleeve having a suitable set-screw, of a tool-keeper having a tool-groove terminating in a recess to fit one end of said sleeve, and arms projecting from the keeper upon the outside of said sleeve end to anchor the keeper.

7. In a hand-tool holder, the combination, with a slidable hand-bracket having a trunnion-bearing, and a collar having a trunnion working in the bearing for revolving the collar, of a tool-sleeve carried by the collar and adapted to turn therein, a suitable set-screw working through the sleeve, and a tool-keeper I anchored to one end of the sleeve within the latter and adapted to adjust itself to a tool under pressure of said screw.

8. In a hand-tool holder, the combination, with a slidable hand-bracket having a trunnion-bearing formed on the front end thereof, of a collar having a trunnion extending through the bearing to permitrevolution of the collar, a tool-sleeve slidable in the collar across its axis of revolution and adapted to be revolved by and with the collar to vary the elevation of the tool-point, said sleeve being revoluble in the collar perpendicular to the axis of revolution of the collar for turning the tool-point to various positions, and means for fixing the collar and the sleeve against said movements.

In witness whereof we hereunto set our hands in the presence of two witnesses.

WALTER E. CROOKER. FRED W. OROOKER. Witnesses to the signature of Walter E. Crocker:

EMMoNs D. GUILD, FRANK E. GUILD. Witnesses to the signature of Fred W. Crocker:

WM. E. COLE, W. R. MARTIN. 

